This LaserMax laser is designed to work exclusively with Ruger 10/22 Rifle models featuring a barrel band. The bright red 635 nm continuous wave laser is visible out to 100 yards in good lighting conditions and is pre-aligned at 25 yards, but can be easily adjusted for windage and elevation when necessary. Weighing-in at less than 2 ounces, each laser is constructed from Fiberglass Reinforced Nylon (FRN) to withstand exposure to the elements and rough handling. Each laser comes installed with a 1/3N Lithium cell battery for approximately two hours of continuous run time. The two, integrated Picatinny rail surfaces are perfect for attachment of additional accessories, such as a tactical light or infrared laser.